 | | Journal (article/letter/editorial) | | Abstract The Merensky Reef at the Western Platinmn mine differs in many respectsfrom the reef at its type...pentlandite and that Ru, Rh, and Ir are associatedwith pyrrhotite and pentlandite. The lateral distributionof ...an extensive description (Wagner, 1929) of all South African deposits. The 1929 volume included a mi...mineralogybetween the Rustenburg ThE Western Platinum mine is situatedon the farm with those of the reef at...RUSmENBUR •• ..... WESTERN PLATINUM PRETOR[A MI MINE FIG.1. Distribution of themaficzoneof theBushveld |  | | Report (issue) | | SURVEY OF SOUTH AFRICA COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA MINERALOGY OF SOUTH AFRICA:... COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA Scientific Editor R.D. Dixon Linguistic and...Council for Geoscience (Geological Survey of South Africa), 280 Pretoria Street, Silverton, Pretoria or........................... 69 5.1 Overview of South African Occurrences ..............................LAYEREDSUITE,BUSHVELDCOMPLEX.... 111 MINERALOGY OF SOUTH AFRICA: TYPE-MINERAL SPECIES AND TYPE-MINERAL NAMES |  | | Journal (article/letter/editorial) | | northernportionsof the Amandelbultsection andAtok mine (Fig. 1) haveplatinum-groupmineral Merensky Reef...disturbedMerenskyreef havebeen recog- the pentlanditeand pyrrhotite containPd, Rh, and nized. Brief descriptions...c•plex bas*c r•ks • THABAZIMBI m•POTGIETERS•S -'-'•ATOK AMANDELBUL• • u•'••TEEL•T UN'•v N•'•.:•TH AM...normalMerenskyreef ele- edgesat the Rustenburgsectionand the Atok mine. vation). Theplatinum-group minerals ofpotholeMerensky...RustenburgPlatinum Mines Ltd. troilite (an Fe-rich variety of pyrrhotite). A late magmaticorigin,ratherthana muchyounger |  | | Journal (article/letter/editorial) | | mineralogyof the MerenskyReefat the Impalaplatinummines,South Africa, hasbeen investigated.Polishedsectionswere preparedfrom...sulfidesoccurringin the MerenskyReef in this area are: pyrrhotite(41%),pentlandite(37%),chalcopyrite (18%),andpyrite(4%)...chalcopyrite, the exsolution of lauriteand moncheitefrom pyrrhotite,and stringersof moncheiteand sperrylitecuttingacrosssilicateand...•3 Rustenburg Platinum Mine .4 WesternPlatinum Mine •S Atok Platinum Mine F[c.1. Distribution ofthemaficportion...Investigations located in the eastern Transvaal, South Africa. Cabri (1981) hassummarizedthe platinum-groupmineral |  | | Journal (article/letter/editorial) | | platinum able information on the ores from the Union mine platinumdeposits.When onebf us (EFS) pubby Kingston(1966)...oœBrynard et al. (1976), cent sperrylite. At Union mine, laurite and ferroVermaakandI-Iendriks(1976), andGasparriniand...Minerals in the Merensky Reef and in the Driekop Pipe Atok, Mineral Platinum-iron alloy (Pt, Fe) Sperrylite...-- 37.6 15.4 2.1 -- 4.0 Outo- kumpu, Vauze mine, Finland** Quebec*** 21.1 15.6 30.9 -- 0.1 1.3...mechanismfirst copper deposits,irrespectiveof the close local assuggested by Rucklidge. The late positionof memsociationof |  | | Journal (article/letter/editorial) | | ISTRA, ANDI•LVIRAGAS?Ai•RINI Abstract The Atok Platinum Mine is situated in the northeastern portion of...precipitant. Introduction BastardReef Ti•F. Atok Platinum Mine is situated on the farm Middelpunt 420 KT...AND GASPARRINI Fro. 1. Locality map of the Atok Platinum Mine in the eastern portion of the Bushveld Igneous...similar chromitite THE MERENSKY REEF AT THE ATOK PLATINUM MINE seamup to 1 inch (2.5 cm) in thickness(locally...Comparison of these results with those published by MINE 253 TABLE l. Correlation Matrices for Samplesfrom |  | | Journal (article/letter/editorial) | | normalreef faciesin the centralsectionof the Rustenburg mine are described and discussed. The studyindicatesthat...favoredfor the formation of myrmekitic Pt-Fe alloy in pyrrhotite,with the relatively more chalcophilicpalladium...publishedlocationand analysesof discrete at the Union mine where a considerablythicker facies platinum-groupmineralsin...1924, much admirablework wasdone by Cooper platinum mine, and Schwellnuset al. (1976) on the (1928, 1929)...1929), Adam (19:31),and Bannister(1982) in Atok platinum mine. An important proportion of the total platinumisolatingsomeof |  | | Report (issue) | | 991 Z=4 X-ray Powder Pattern: Merensky Reef, South Africa. 2.295 (100), 1.202 (100), 1.408 (90), 0.9153...28.28 17.70 Total 99.42 (1) Merensky Reef, South Africa; by electron microprobe, corresponding to (Pt1...Reef, South Africa). Association: Atokite, unspecified platinum tellurides (Merensky Reef, South Africa);...Africa); moncheite, pyrrhotite, pentlandite (Stillwater complex, Montana, USA). Distribution: In the Rustenburg...[TL], Atok, and Onverwacht mines, on the Merensky Reef, Bushveld complex, Transvaal, South Africa. From |  | | Journal (article/letter/editorial) | | the Merensky Reef at Bafokeng Rasimone Platinum Mine (BRPM) are described. A model for the formation...magma emplacement owing to interaction with the local Transvaal sediments. As a result, mechanical separation...The 206 Ga magmatic event recorded in southern Africa led to the formation of several layered intrusions...Nkomati deposit, located c. 50 km to the east of the South Eastern Bethal Limb (De Waal et al., 2001; Li et...Since its discovery the Bushveld Complex in South Africa has attracted unprecedented interest owing to |  | | Journal (article/letter/editorial) | | University] at 17:41 09 June 2016 TaEnaleh, Noril’sk District, Siberia, Russia U ntil a few years ago, the...fact, this find and a historical locality in South Africa for which specimens are not available represented...It occurs with pentlandite, chalcopyrite, and pyrrhotite in sulfide ores such as those of Sudbury, Ontario...layered intrusive bodies such as the Bushveld (South Africa) and Stillwater (Montana) Complexes. In addition...Great Eastern mine, Clark County, Nevada. It is an ore mineral in the active Pt-Pd mine and related occurrences |  | | Journal (article/letter/editorial) | | and were collected from drill core and underground mine exposures. All the rocks are fresh and exhibit no...the Merensky reef were formerly known as the Atok mine), in the Oliphants River valley in the northeast...mineral. The sulfide assemblage is dominated by pyrrhotite, pentlandite, and chalcopyrite, but in the Merensky... 2. An irregular sulfide grain consisting of pyrrhotite (po) and pentlandite (pn) surrounded by phlogopite...s ⫽ multiple or unknown sulfide phases; po ⫽ pyrrhotite; ccp ⫽ chalcopyrite; pn ⫽ pentlandite Figure |  | | Report (issue) | | a = 5.967 Z=4 X-ray Powder Pattern: Vermilion mine, Sudbury, Canada. 1.801 (100), 0.777 (90), 1.148...42.8 (2) 43.44 Total 99.68 100.00 (1) Vermilion mine, Sudbury, Canada; by electron microprobe, corresponding...occurring in every type of deposit. Association: Pyrrhotite, pentlandite, chalcopyrite, violarite, cubanite...mines, Algoma district, near Sudbury, Ontario. In the USA, at the New Rambler Cu–Ni mine, Medicine Bow...Co., Wyoming; in the Key West mine, east of Moapa, Bunkerville district, Clark Co., Nevada; and from the |  | | Journal (article/letter/editorial) | | ROGER N. SCOON† P.O. Box 2461, Rivonia 2128, South Africa Abstract Exploration for platinum-group elements...in the eastern limb of the Bushveld Complex, South Africa. The new discovery was made on the Dwarsrand...Bushveld Complex, South Africa. The exploration programs were carried out by two South African companies...Dwarsrand property in the boundary area between the Atok and Messina platinum mines (Fig. 1). Whereas the...Based on the published Geological Survey of South Africa 1:250,000 Series, Sheet No. 2428, with some |  | | Journal (article/letter/editorial) | | Applied Geology, University of Natal, Durban, 4041 South Africa C.A. Lee Anglo American Platinum Corporation...62179, Marshalltown, 2107, South Africa Present address: 1Hartley Platinum Mine, PO. Box CY 2288, Harare...Fig. 1 Geographic location of Rustenburg Platinum Mine (Rustenburg Section) in the Bushveld Complex. The...far more complicated. Sr isotope studies of the Atok facies of the reef (Lee and Butcher 1990) have shown...by Mathez et al. (1977) on the Merensky reef at Atok in the northeastern Bushveld is in a pothole and |  | | Report (issue) | | Federal Republic of Germany, the Republic of South Africa, the United Kingdom, and the United States of...Federal Republic of Germany, the Republic of South Africa, the United Kingdom, and the United States of...Mineral Policy Sector (MPS); Gabriele I.C. Schneider, South African Department of Mineral and Energy Affairs...resources and mine production by geologic deposit type. . . 5. Distribution of cobalt resources and mine and metal...TABLES Page TABlE 1. 2. 3. 4. 5. 6. World cobalt mine production 1977-83............................. |  | | Journal (article/letter/editorial) | | sequence typicalof magmatic assemblages (pyrite,pyrrhotite, pentlandite, andchalcopyrite) with a hostof..."invisible" portionof the platinoidsoccurswithin pyrrhotite,pentlandite, or pyrite, either as a true or as...--589.6 m --590.4 m --543.5 m 6-6 north 7-1 south 7-1 south --1240 m Clino- pyroxene Feldspar Olivine...Sources:1-7. Farm Zwartklip 405 KQ--Union Platinum Mine (van Zyl, 1960,p. 43); 8. Farm Turffontein302 JQ--Rustenburgarea...(1972); 11-12. Farm Zwartklip 405 KQ--Union Platinum Mine (van Zyl. 1960, p. 35); 13. Sample Z280, borehole |  | | Journal (article/letter/editorial) | | 4000, South Africa AND ROGER N. SCOON Postnet Suite 291, Private Bag X31, Knysna 6570, South Africa...of the eastern limb of the Bushveld Complex, South Africa (Fig. 1). The original discovery of the Merensky...contributions from this area to date deal with the Atok mine, for many years the only platinum producer in...Driekop, Maandagshoek, and Winnaarshoek properties, south 971 972 MITCHELL AND SCOON FIG. 1. Schematic...referred to in the text also shown are: 1 = Atok platinum mine, 2 = Maandagshoek, 3 = Thorncliffe, 4 = Brits |  | | Report (issue) | | world ............ 3 Platinum deposits in South Africa ............. 3 Major platinum deposits in...PRODUCING AREAS OF THE WORLD Canada, Colombia, South Africa, and Russia have been the major producers of...resources by the U.S. Bureau of Mines indicate that South Africa has over 2,000 million ounces; U.S.S.R., 400...Columbia, 5 million ounces. Platinum Deposits in South Africa The Bushveld Igneous Complex, a stratiform intrusion...major mines in the Merensky Reef include Bafokeng South, Bafokeng North, and Widebeestfontein operated by |  | | Journal (article/letter/editorial) | | differentiatingthe oresin the vicinity (north and south) of the PilansbergAlkaline Complexfrom thoseof the...Mineral name (where known) or qualitative1 Atok Gravity Atok ZG-32 composition east concentrate central...databasedonqualitative microprobe anlayses only pentlandite,pyrrhotite,andchalcopyrite,whereasthe contactreef is es...containsmackinawiteand cubanite in addition to pentlandite, pyrrhotite, and chalcopyrite. The sizeof the platinum-group...platinum-group basemetal sulfidessuch as pentlandite,pyrrhotite, pyrite, and possiblyalsoin the olivine and serpentine |  | Barkov, A. Y., Martin, R. F., Kaukonen, R. J., Alapieti, T. T. (2001) THE OCCURRENCE OF Pb Cl (OH) AND Pt Sn S COMPOUNDS IN THE MERENSKY REEF, BUSHVELD LAYERED COMPLEX, SOUTH AFRICA. The Canadian Mineralogist, 39 (5) 1397-1403 doi:10.2113/gscanmin.39.5.1397 | Journal (article/letter/editorial) | | THE MERENSKY REEF, BUSHVELD LAYERED COMPLEX, SOUTH AFRICA ANDREI Y. BARKOV§ AND ROBERT F. MARTIN Department...the Merensky Reef, Bushveld layered complex, South Africa. This seems to be the first reported occurrence... mafic-ultramafic rocks, layered intrusion, South Africa. SOMMAIRE Nous documentons la présence d’une...the Merensky Reef, Bushveld igneous complex, South Africa. We describe this phase and the associated platinum-group...after the pyroxene is quite abundant in places. Pyrrhotite is the main sulfide in this rock, followed by |  | | Journal (article/letter/editorial) | | of Pretoria, Pretoria, South Africa, 2 Messina Ltd., Johannesburg, South Africa With 7 Figures Received...1978; Hatton and Von Gruenewaldt, 1987). In the south, an anticlinal feature in the floor rocks, the Steelpoort...critical zone from 1500 m north of the fault to 700 m south of the fault. Lack of outcrop and mining activity...about 5000 m. The rocks strike E - W and dip to the south, with dips increasing from about 50-55 ° in the...encompass the two chromitite layers, are developed. Local thickening of the UG-2 pyroxenite is sometimes accompanied |  | Oberthur, T., Melcher, F., Gast, L., Wohrl, C., Lodziak, J. (2004) DETRITAL PLATINUM-GROUP MINERALS IN RIVERS DRAINING THE EASTERN BUSHVELD COMPLEX, SOUTH AFRICA. The Canadian Mineralogist, 42 (2) 563-582 doi:10.2113/gscanmin.42.2.563 | Journal (article/letter/editorial) | | RIVERS DRAINING THE EASTERN BUSHVELD COMPLEX, SOUTH AFRICA THOMAS OBERTHÜR§, FRANK MELCHER, LOTHAR GAST...placer, Maandagshoek, eastern Bushveld Complex, South Africa. SOMMAIRE Lors de nos campagnes de terrain...between 2 and 3 km wide and runs approximately north–south, subparallel to the layering of the Mafic Phase...hills underlain by the Critical Zone. Between the Atok mine and Steelpoort (Fig. 2), the layered sequence...Maandagshoek (Fig. 2). Accordingly, both a north- and a south-flowing Moopetsi River are present. In the area |  | | Book | | revised edition) 2 2 . N. DEKUN MINERAL ECONOMICS OF AFRICA 2 3 . B.L GULSON LEAD ISOTOPES IN MINERAL EXPLORATION...never be spoken. " P. A. WAGNER, The platinum South Africa deposits so be alluring prophesied and mines...converters to be fitted to new cars. At present, South Africa and the USSR are the sources of most of the...world's newly mined PGE, with virtually all the South African production derived from the Bushveld Complex...magmatic sulphides as potent collectors of PGE. The South African producers are relatively well placed t o |  | Cabri, Louis J., Laflamme, J. H. Gilles, Stewart, John M., Turner, Kent, Skinner, Brian J. (1978) On cooperite, braggite, and vysotskite. American Mineralogist, 63 (9-10) 832-839 | Journal (article/letter/editorial) | | primitivecell of Bannisterand Hey. In their umepercentat the Atok Platinumminein theeastern powder pattern,however...spacegroup nard et al. (1976);and25 volumepercentat the Atok P4r/m, Z : 8. Thesedata suggested stronglythat Platinummine...samples5, 6 and 7 providedby the Corporation. Using local mine terminology,sampleI camefrom the Bastardzone...that separatedfrom the parisoferroplatinum + pyrrhotite was a stable assem- ent magma. blage in the Pt-Fe-S...a t t h e W e s t e r n Platinum mine, near Marikana, South Africa. Econ. Geol ,71, 1299-1307. Cabri |  | Li, C., Ripley, E. M., Merino, E., Maier, W. D. (2004) REPLACEMENT OF BASE METAL SULFIDES BY ACTINOLITE, EPIDOTE,CALCITE, AND MAGNETITE IN THE UG2 AND MERENSKY REEF OF THE BUSHVELDCOMPLEX, SOUTH AFRICA. Economic Geology, 99 (1) 173-184 doi:10.2113/gsecongeo.99.1.0173 | Journal (article/letter/editorial) | | UG2 AND MERENSKY REEF OF THE BUSHVELD COMPLEX, SOUTH AFRICA CHUSI LI,† EDWARD M. RIPLEY, ENRIQUE MERINO...Pretoria 0002, South Africa Abstract Interaction of base metal sulfides (pyrrhotite, pentlandite, and...an area of 240 × 350 km situated in northern South Africa (Fig. 1). The complex is subdivided into five...and Western platinum mines. RSA = Republic of South Africa. concentrations that vary from parts per million...parts of the complex. The total sulfide contents (pyrrhotite + pentlandite + chalcopyrite) in the UG2 and |
|
